The secret of success is constancy of purpose.
- Benjamin DisraeliThat in affairs of very considerable importance men should deal with one another with satisfaction of mind, and mutual confidence, they must receive competent assurances concerning the integrity, fidelity, and constancy each of other.
- Alexis TruchanAfflictions sent by providence melt the constancy of the noble minded, but confirm the obduracy of the vile, as the same furnace that liquefies the gold, hardens the clay
- Charles Caleb ColtonConstancy is the complement of all other human virtues
- Giuseppe MazziniObstinacy in a bad cause is but constancy in a good
- Thomas Browne, Sr.